vhost_vdpa: unset vq irq before freeing irq

Currently we unset vq irq after freeing irq and that will result in
error messages:

pi_update_irte: failed to update PI IRTE
irq bypass consumer (token 000000005a07a12b) unregistration fails: -22

This patch solves this.

Signed-off-by: Wu Zongyong <[e-mail]>
Link: https://lore.kernel.org/r/02[e-mail]
Signed-off-by: Michael S. Tsirkin <[e-mail]>
Acked-by: Jason Wang <[e-mail]>

drivers/vhost/vdpa.c

···
 	if (status != 0 && (ops->get_status(vdpa) & ~status) != 0)
 		return -EINVAL;
 
+	if ((status_old & VIRTIO_CONFIG_S_DRIVER_OK) && !(status & VIRTIO_CONFIG_S_DRIVER_OK))
+		for (i = 0; i < nvqs; i++)
+			vhost_vdpa_unsetup_vq_irq(v, i);
+
 	if (status == 0) {
 		ret = ops->reset(vdpa);
 		if (ret)
···
 	if ((status & VIRTIO_CONFIG_S_DRIVER_OK) && !(status_old & VIRTIO_CONFIG_S_DRIVER_OK))
 		for (i = 0; i < nvqs; i++)
 			vhost_vdpa_setup_vq_irq(v, i);
-
-	if ((status_old & VIRTIO_CONFIG_S_DRIVER_OK) && !(status & VIRTIO_CONFIG_S_DRIVER_OK))
-		for (i = 0; i < nvqs; i++)
-			vhost_vdpa_unsetup_vq_irq(v, i);
 
 	return 0;
 }